On Monday, Ariarne Titmus won the 400m freestyle in 3:55.44 ahead of Pallister (4:02.27) and Jamie Perkins (4:04.38).

Titmus also breached Swimming Australia’s Olympic Qualification time for the Paris Olympics in the women’s 200m (1:56.49) and 400m freestyle (4:26.87) races. She won Olympic gold medals at Tokyo 2020 in both events.

Earlier at the Olympic swimming trials, Kaylee McKeown, the Tokyo 2020 gold medallist in the 100m and 200m backstroke events, set a new Australian record in the women’s 200m individual medley and followed it up with a win in the 100m backstroke.

Emma McKeon clinched the top spot in the women’s 100m butterfly. Emma, who won four gold and three bronze at Tokyo 2020, is one of the most decorated swimmers competing at the trials in Brisbane.

With the maximum-possible 52 quotas – 26 for men and 26 for women – secured for the Paris 2024 Olympics, Australia is expected to send a full quota of swimmers to Paris.

Tokyo 2020 Olympics gold medallist Zac Stubblety-Cook, Kyle Chalmers, Cameron McEvoy, Sam Short and Elijah Winnington, Cate Campbell, Emily Seebohm, Bronte Campbell and Mitch Larkin are among the top Aussie swimmers in action in Brisbane.